And this is the crux of aviation law, very rarely will you be prosecuted for these breaches without something going wrong first. If you were to load up a Navajo and take off at 40C lose and engine and injure several people you will then be under the microscope, as the injured will want a ruling of who's responsible under law. Piper is going to claim you were outside the operating envelope for the aircraft, as there were no charts to prove you could climb. The engine manufacturer will come up with several reasons why its not their fault it failed. The engineers know how to produce paperwork that it was all fine until you flew it. Leaving the the dunce in the left seat who thought they knew how to extrapolate and knowingly flew beyond the lines. Good luck convincing the lawyers that you were not negligent and owe millions to the passengers.
Of course if the manual says what to do and how to extrapolate safely, fill ya boots the manufacturer has given permission to do so. But without express permission from the manufacturer and details how to you are probably on the wrong side of the grey border.
And using density charts to extrapolate in extreme heat is troublesome, as engine, wing, oil and fuel systems all deteriorate performance with non linear drop off, in fact it could be quite sharp performance loss at high temperatures as nothing on the aircraft may be designed for it.
PS; food for thought, a Ships Captain was charged today over choosing to sail in poor weather across Bass Strait. It led to the deaths of a number of cattle on board the ship. Fined $15,000. Shows that aviation is not the only area where you can get caught by the courts for pushing bad weather. Where does it specify when a sailing must be abandoned due to weather with cattle on board, well that just comes down to the Captain. If they die or are injured it was too rough regardless...
Last edited by 43Inches; 25th Jan 2023 at 22:47.